If the symptoms of compression (specific) are serious, the chest cavity is generally closed for drainage, and there is no gas overflow after drainage. If the chest radiograph is taken by clamping the tube, the tube can be pulled out without air leakage for 48 hours, which is easy to relapse in the early stage and will increase the pain of the patient in the later stage! Prevention: Recently, there were 9 consecutive cases of spontaneous pneumothorax in the hospital, including 7 high school students (young farmers 1) and the elderly 1. All of them had a history of strenuous exercise or cough before pneumothorax, and they were tall and thin. If they have chest pain and dyspnea after coughing violently or exerting too much force, they should be alert to the possibility of spontaneous pneumothorax and go to the hospital in time to avoid delaying treatment. 1, to prevent sudden overexertion, shouting and hard defecation; 2. Preventing respiratory tract infection is an important factor to prevent pneumothorax; 3. Prevent lifting heavy objects, holding your breath and strenuous exercise; 4. Exercise should choose jogging, Tai Ji Chuan and other sports to avoid antagonistic and violent sports such as basketball and football that require sudden exertion. 5. Spontaneous pneumothorax should give priority to nutrition, supplement nutrition more, carry out aerobic exercise as much as possible, enhance physical fitness and avoid overwork. Among them, a 29-year-old young man was hospitalized for 4 times because of spontaneous pneumothorax, and this time he had an operation.